Sram: The CenterLine design provides a smooth, consistent, and quiet running braking surface. Rounded edges make for easier wheel installs and are UCI-compliant. THINGS TO REMEMBER Compatible with both road and mountain bike brakesFEATURES AND BENEFITS Rounded edges are UCI-compliant and allow for easier wheel installsSPECIFICATIONSDiam (Rotor): 160mm, 180mm, 200mmHub interface: 6-bolt, Center LockRotor Type: Centerline